(19)
(11) EP 1 450 531 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
26.01.2005 Bulletin 2005/04

(43) Date of publication A2:
25.08.2004 Bulletin 2004/35

(21) Application number: 04012940.5

(22) Date of filing: 21.06.1991
(51) International Patent Classification (IPC)7: H04L 27/30, H04B 7/26, H04J 13/00
(84) Designated Contracting States:
AT BE CH DE DK ES FR GB GR IT LI LU NL SE

(30) Priority: 25.06.1990 US 543496

(62) Application number of the earlier application in accordance with Art. 76 EPC:
01103642.3 / 1104955
91915727.1 / 0536334

(71) Applicant: QUALCOMM INCORPORATED
San Diego, CA 92121-1714 (US)

(72) Inventors:
  • Gilhousen, Klein S. c/o QUALCOMM INCORPORATED
    San Diego, CA 92121-1714 (US)
  • Weaver, Lindsay A., Jr. c/o QUALCOMM INCORPORATED
    San Diego, CA 92121-1714 (US)
  • Jacobs, Irwin M. c/o QUALCOMM INCORPORATED
    San Diego CA 92121-1714 (US)

(74) Representative: Wagner, Karl H., Dipl.-Ing. et al
Wagner & Geyer, Patentanwälte, Gewürzmühlstrasse 5
80538 München
80538 München (DE)

   


(54) System and method for generating signal waveforms in a CDMA cellular telephone system


(57) A cell site, comprising:
  • means for modulating configured to format digital data for transmission on a communications channel and to insert at least one timing command into the digital data, the digital data comprising a plurality of bits;
  • means for transmitting coupled to the means for modulating and configured to receive the digital data from the means for modulating, convert the digital data to analog data, and transmit the analog data on the communications channel; and
  • means for receiving configured to receive a signal from at least one remote unit and to determine a timing error of the received signal to be used to generate the timing command in accordance with the timing error, the means for receiving being coupled to the means for modulating and configured to provide the timing command to the means for modulating.






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